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/*
* No copyright is claimed. This code is in the public domain; do with
* it what you wish.
*
* Copyright (C) 2011 Karel Zak <kzak@redhat.com>
*/
#ifndef UTIL_LINUX_SYSFS_H
#define UTIL_LINUX_SYSFS_H
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <inttypes.h>
#include <dirent.h>
#include "path.h"
/**
* sysfs_devname_sys_to_dev:
* @name: devname to be converted in place
*
* Linux kernel linux/drivers/base/core.c: device_get_devnode()
* defines a replacement of '!' in the /sys device name by '/' in the
* /dev device name. This helper replaces all occurrences of '!' in
* @name by '/' to convert from /sys to /dev.
*/
static inline void sysfs_devname_sys_to_dev(char *name)
{
char *c;
if (name)
while ((c = strchr(name, '!')))
c[0] = '/';
}
/**
* sysfs_devname_dev_to_sys:
* @name: devname to be converted in place
*
* See sysfs_devname_sys_to_dev().
*/
static inline void sysfs_devname_dev_to_sys(char *name)
{
char *c;
if (name)
while ((c = strchr(name, '/')))
c[0] = '!';
}
struct sysfs_blkdev {
dev_t devno;
struct path_cxt *parent;
unsigned int scsi_host,
scsi_channel,
scsi_target,
scsi_lun;
unsigned int has_hctl : 1,
hctl_error : 1 ;
};
void ul_sysfs_init_debug(void);
struct path_cxt *ul_new_sysfs_path(dev_t devno, struct path_cxt *parent, const char *prefix);
int sysfs_blkdev_init_path(struct path_cxt *pc, dev_t devno, struct path_cxt *parent);
int sysfs_blkdev_set_parent(struct path_cxt *pc, struct path_cxt *parent);
struct path_cxt *sysfs_blkdev_get_parent(struct path_cxt *pc);
char *sysfs_blkdev_get_name(struct path_cxt *pc, char *buf, size_t bufsiz);
int sysfs_blkdev_is_partition_dirent(DIR *dir, struct dirent *d, const char *parent_name);
int sysfs_blkdev_count_partitions(struct path_cxt *pc, const char *devname);
dev_t sysfs_blkdev_partno_to_devno(struct path_cxt *pc, int partno);
char *sysfs_blkdev_get_slave(struct path_cxt *pc);
char *sysfs_blkdev_get_path(struct path_cxt *pc, char *buf, size_t bufsiz);
dev_t sysfs_blkdev_get_devno(struct path_cxt *pc);
char *sysfs_blkdev_get_devchain(struct path_cxt *pc, char *buf, size_t bufsz);
int sysfs_blkdev_next_subsystem(struct path_cxt *pc __attribute__((unused)), char *devchain, char **subsys);
int sysfs_blkdev_is_hotpluggable(struct path_cxt *pc);
int sysfs_blkdev_is_removable(struct path_cxt *pc);
int sysfs_blkdev_get_wholedisk( struct path_cxt *pc,
char *diskname,
size_t len,
dev_t *diskdevno);
int sysfs_devno_to_wholedisk(dev_t dev, char *diskname,
size_t len, dev_t *diskdevno);
int sysfs_devno_is_dm_private(dev_t devno, char **uuid);
int sysfs_devno_is_wholedisk(dev_t devno);
dev_t sysfs_devname_to_devno(const char *name);
dev_t __sysfs_devname_to_devno(const char *prefix, const char *name, const char *parent);
int sysfs_devname_is_hidden(const char *prefix, const char *name);
char *sysfs_devno_to_devpath(dev_t devno, char *buf, size_t bufsiz);
char *sysfs_devno_to_devname(dev_t devno, char *buf, size_t bufsiz);
int sysfs_devno_count_partitions(dev_t devno);
int sysfs_blkdev_scsi_get_hctl(struct path_cxt *pc, int *h, int *c, int *t, int *l);
char *sysfs_blkdev_scsi_host_strdup_attribute(struct path_cxt *pc,
const char *type, const char *attr);
int sysfs_blkdev_scsi_host_is(struct path_cxt *pc, const char *type);
int sysfs_blkdev_scsi_has_attribute(struct path_cxt *pc, const char *attr);
int sysfs_blkdev_scsi_path_contains(struct path_cxt *pc, const char *pattern);
char *sysfs_chrdev_devno_to_devname(dev_t devno, char *buf, size_t bufsiz);
enum sysfs_byteorder {
SYSFS_BYTEORDER_LITTLE,
SYSFS_BYTEORDER_BIG,
};
extern enum sysfs_byteorder sysfs_get_byteorder(struct path_cxt *pc);
extern int sysfs_get_address_bits(struct path_cxt *pc);
#endif /* UTIL_LINUX_SYSFS_H */
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